John desmond



J DESMOND.

sTEAM INJEQT R.

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Patented Jan. 25, 1-887.

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ilnrTnn STATES ATTENT @rrrcn.

JOHESI DESMONI), OF DETROIT, MICHIGAN ASSIGNOR TO THE PENBERTHY INJECTOR COMPANY, OF SAME PLACE.

STEAM-lNJECTOR.

ZEPECIFICATION forming part of Letters Patent No. 356,682, dated January 25, 1887.

Application filed September 4, 1886. Serial ,No. 212,728. lll'odel.)

To aZZ whom it may concern.-

Be it known that I, JOHN DESMOND, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Steam-Injectors, of which the following is a specification, reference being had therein to the accompanying drawings.

IO This invention pertains to certain new and useful improvements in steaminjectors, having for its object to provide means for the opening of the exhaust-ports of the liftingtube on starting the injector, and the ready closing of the same when avacuum is formed around the inner inclosed end of the combining-tube; and my invention also embodies an improved overflow-valve; and it consists in the detailed construction, combination, and ar inafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical sectional view of an injector embody- 5 ing my invention, and Figs. a and 3 are detail views thereof.

In carrying out my invention I employ a casting or tubular casing, A, having two lateral arms, (L a, the former, a, having in practice suitable connection by a separable screwthreaded pipe-section, b, with a water-pipe leading from the source or supply of water.

. The screw-threaded pipe-section is secured to the said arm a by an ordinary coupling-nut, b.

.Vithin the normally upper or stean1-su pply end of the casing A is secured the steam-jet pipe 13, the same having a contracted or diminut-ive passage extending through it, and is provided on its outer surface with a stepped up annular shoulder or disk, B, fitting partly within and partly against the receiving end of the casing, and is thus secured by an ordinary screw-threaded pi pesectiornb'fl and coupling-nut similar in all respects to the be- 5 fore-described pipe-section and coupling-nut. The casting or tubular casing A comprises a water-supply chamber, 0, and an overflow water-chamber, 0', the same being separated by an apertnred wall, 0', the purpose of which latter will soon appear.

D is an apertured Ianternshaped liftingtube, the upper contracted end of which rests within the apertured wall (1*, said end having a. shoulder, (1, formed by the upper outer end of the apertured wall (1". The extreme lower 5 5 end of said apertured wall (Z of the liftingtube is made integral with alarge flanged portion or disk, (1*, the inner surface of which is screw-threaded for securing the liftingtube on a correspondingly-threaded portion of the inner tapered end, e, of the combining-tube E. This combining-tube is provided with a small flange or shoulder for fitting snugly against the outer surface of the flanged portion or disk (1* of the lifting'tube, and the tapered end 6 of the combining-tube, which projects up into the center of. said liftingtube, is pro vided with opposite lateral passages or apertures, c, which, when the combining-tube is screwed home, are each directly opposite an aperture formed in the wall of the liftingtube. The outer end of the combining-tube is made integral with the inner end of the deliverytube E", the point where said tubes meet being provided with opposite lateral pas- 7 5 sages, 6; but I do not make any claim to forming integral the combining and delivery tubes, as the same is shown and described in Letters Patent No. 3i3,139, granted to Villiam Penberthy on June 1, 1886. The outer end of the delivery-tube is fitted within the delivery end of the casting or casing by an ordinary pipesection and coupling nut. The combining and delivery tubes are of course provided with the usual tapered passages, e c", respect- 8 ively.

Upon the outer surface of the apertured wall d of the lantern-shaped liftingtube is fitted so as to loosely slide thereon a wide ring or band, F, the movement thereof being limited by a small stud or projection, (1 secured on the outer side of the combining-tube, near the shoulder d. This ring or band has a portion of its inner surface removed near its lower end, forming an inclined circular shoulder or 5 flange, f, around its entire inner surface, the

urpose of which will hereinafter appear.

\Vithin the lateral curved arm a is secured the overflow-valve G, the same consisting of a disk fitting over the overfiowhole or opening f, formed in the wall of the casting or easing at that point, and this disk has a hollow sleeve or cylindric extension, projecting from its rear side, upon which is passed one end of an arm, G, the other end of said arm being pivoted by a small cross bar or rod, 5/, secured at its ends in apertured lugs formed on the upper portion of either side wall of the curved lateral arm a. After passing the end of arm Gon the sleeve or extensiong, a small washer, 9 is also passed or inserted thereon, and the same are secured in position by means of a small screw, 9', screwed into the outer open end of said sleeve or extension, thelatterhaving for this purpose a female screw-thread formed on its inner surface.

The outer side of the wall or casing around the overflow hole or openingf is so formed as to causethe valve, when inits normal position, to occupy a slanting or inclined position, thus always insuring the seating of the disk over the overflow hole or opening. The extension g is screw-threaded, so as to regulate its adj ustment on the end of the pivoted arm G. The curved lateral arm is provided on its outer curved portion with an ordinary screw-cap, G permitting easy access to the overflowvalve when desired.

The operation is as follows: Steam being admitted into the jet-pipe passes through the tapered passage thereof into the tapered projecting end of the lifting-tube, causing the lifting of the water into the water supply chamber. The steam, first passinginto the lantern-shaped portion of the lifting-tube,s triking against the inclined circular shoulder f, formed on the inner surface of the ring or band, will force said ring or band upward out of its normal position, and passing out into the overflow-chamber (also out through the opposite lateral outlets between the combining and delivery tubes) will raise the overflow-valve from its seat, thus producing, by reason of its easy access to the atmosphere, a vacuum, causing suction, which immediately elevates the water through the passages in the lifting, combining, and delivery tubes. Immediately upon the formation of a vacuum around the inner inclosed end of the combining-tube, the ring or band closes down over the apertures in the lantern-shaped portion of the lifting-tube, as suming its normal position. The closing of the ring or band shuts off the overflow of any steam or water, and enables the injector to start automatically at any pressure at which it will cause the elevation and injection of the water.

From the foregoing it will be seen that the sliding ring or band, in connection with the lantern-shapedlifting-tube, serves the purpose of a sliding tube, as heretofore used inthis class of inventions, and the same is not liable to get out of order from frequent usage, as is the case with the sliding tube; also, that the overflow-valve is so disposed as to operate automatically, and is void of all'spring-pressure.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with the casing having the overflow-chamber, the apertured lanternshaped lifting-tube, and the combining and delivery tubes, of the ring or collar fitted to slide on said lifting-tube and having an inclined circular shoulder on its inner surface, substantially as shown and described.

2. The combination, with. the combining and delivery tubes, of the liftingtube provided with the lantern-shaped portion and the ring or-band sliding on said lifting-tube, substantially as shown and described.

3. The combination, with the lifting-tube, of the ring or band having an inclined circular shoulder on its inner surface, substantially as shown, and for the purpose described.

4. The combination, with the delivery and: combining tubes, the latter having opposite lateral passages, and the lifting-tube, of the sliding ring or band, substantially as shown and described.

5. The overflow-valve consistingof the disk having a sleeve or extension and the pivoted arm secured thereon, substantially asshown. and described.

6. The combination, with the casing having a curved lateral arm, of the pivoted arm and the disk having an internally-threaded extension fitted in the free end of said arm, sub stantially as shown and described.

7. The combination, withthe casing having its outer wall inclined around the overflowopening and the lateral arm, of the overflowvalve pivoted in said arm and occupying the described relative position. to said opening, substantially as shown and described.

8. The hereindescribed injector, comprising the casing, the water-supply and overflow chambers, the lifting, combining, and delivery tubes, the sliding ring or band, the curved lateral arm, and the overflow-valve consisting of. the pivoted arm, and the disk having an extension securedby said arm,substantially as shown and described.

In testimony whereof I affix my signaturein presence of two witnesses.

JOHN DESMOND.

Witnesses:

J no. B. Conmss, SoLIN JOHNSON.

ICO 

